Expression of tea cytosolic glutamine synthetase is tissue specific and induced by cadmium and salt stress

Abstract

Glutamine synthetase (GS) showed highest expression and activity in bud (youngest topmost leaf) of Camellia sinensis, lower in older leaves, while lowest activity in stem and roots. GS expression and activity was increased by ammonium and nitrate and also by cadmium and salt stress but decreased by copper, aluminum, drought, cold and heat stress. © 2008 Institute of Experimental Botany, Academy of Sciences of the Czech Republic.